WASHINGTON (AP) - Republicans tried to push back against the ballooning size of President Barack Obama's economic recovery plan Wednesday, even as he warned that the financial crisis will turn into "a catastrophe" if the bill isn't passed quickly.

Their effort is central to building at least some bipartisan support for the bill, which has come under increasing attack for too much spending unrelated to jolting the economy right away.

Obama indicated he's amenable to changes.

"No plan is perfect, and we should work to make it stronger," Obama said at the White House Wednesday. "Let's not make the perfect the enemy of the essential. Let's show people all over our country who are looking for leadership in this difficult time that we are equal to the task."

The cost of the plan expanded past $900 billion after the Senate on Tuesday added money for medical research and tax breaks for car purchases. An effort to add $25 billion more for infrastructure projects—which narrowly failed to advance—is likely to be revived.

The president rejected some criticisms of the plan: that tax cuts alone would solve the problem, or that longer-term goals such as energy independence and health care reform should wait until afterward.

In remarks at the White House, Obama argued that recalcitrant lawmakers need to get behind his approach, saying the American people embraced his ideas when they elected him president in November.

Obama has sought each day to ratchet up the pressure on lawmakers, bringing different supportive groups to the White House, scheduling a series of TV interviews, even traveling to a charter school to tout one portion of the bill.

"A failure to act, and act now, will turn crisis into a catastrophe and guarantee a longer recession, a less robust recovery, and a more uncertain future," Obama said in his prepared remarks. http://www.breitbart.com/article.php?id=D964UGBG0&show_article=1